80 H.P. Clerget, seven-cylinder, 80 hp, engine no. 1009, W.D. no. 2249. Block tube carburetter from this engine, exhibited with engine details. Built by Gwynnes Ltd. 80 H.P. Clerget Aircraft Propulsion 1913
M.T.9.F. dummy valve, manufactured by the M-O Valve Company Limited, Hammersmith, London, England, 1920-1929 M.T.9.F. dummy valve, 1920-1929 Electronic Components 1920-1929
M.T.9 dummy valve, manufactured by the M-O Valve Company, Hammersmith, London, England, 1920-1929 M.T.9 dummy valve, 1920-1929 Electronic Components 1920-1929
Model 25-7D Master clock with special dial, figures and hands. No.21285,International Time Recording Company Ltd., London, 1950-1959. It was electrically self-winding. The Master Clock was part of a Minutue Impulse Time System, which involved other time recorders which took their time from this one. A Master Clock, Model 25-7 by ITR Ltd, 1950-1959 Time Measurement 1950-1959
A black and white silver gelatin photograph entitled "In Rehearsal. Ronald Hynd supports Anya Linden in a pas-de-deux while the rest of the cast snatch a rest. Royal Ballet, Hammersmith, London, circa 1962", by Michael Peto. From the Impressions Gallery exhibition "The Body Electric: An Exhibition of Ballet and Dance Photography, 1859 to the Present Day", shown 7 January - 11 February 1984 In Rehearsal, The Royal Ballet Photographs
The prototype commercial HCN gas laser unit consisting of a discharge tube and thermally stabilised optical system capable of giving 1 mW output in the far infra-red range, 1971. prototype HCN infra-red laser Nuclear Physics 1970-1972
The International Superelectric Time System. Two electric movements (secondary clocks) model 561-2 with two 6" dials and two pairs 6" hands, made by International Time Recording Co, 1930-1959. They were used in the workplace to regulate time the monitor hours worked. International Superelectric " Supervised" Secondary Clocks, 1930-1959 Time Measurement 1930-1959
Impulse accumulator No.4028, 1950-1959. It acted to regulate the time of every unit on a Minute Impulse Time System if there was interruptions in the electricity supply to the Master Clock. Impulse Accumulator, for use with a ITR Ltd Master Clock, 1950-1959 Time Measurement 1950-1959
Model 25-7D Master clock with special dial by International Time Recording Company Limited, and key Model 25-7D Master clock with special dial by International Time Recording Company Limited Time Measurement
